Four-point contact ball bearings QJ304MA

Four-point contact ball bearings QJ304MA

Four-point contact ball bearings

Four-point contact ball bearings are radial single row angular contact ball bearings with raceways that are designed to support axial loads in both directions. For a given axial load, a limited radial load can also be supported . The bearings are separable, i.e. the outer ring with ball and cage assembly can be mounted separately from the two inner ring halves.

Both inner ring halves of SKF Explorer four-point contact ball bearings have a recessed shoulder. This improves oil flow when the bearing is used in combination with an SKF cylindrical roller bearing . In addition, these recesses can be used to facilitate dismounting.

SKF Four-point contact ball bearings

 

Designation Principal dimensions Basic load ratings Speed ratings
dynamic static Limiting speed
d[mm] D[mm] B[mm] C[kN] C0[kN] [r/min]
 QJ203N2MA   17   40   12   17   11.4   30 000
 QJ304MA   20   52   15   32   21.6   24 000
 QJ205MA   25   52   15   27   21.2   22 000
 QJ305MA   25   62   17   42.5   30   20 000
 QJ206MA   30   62   16   37.5   30.5   19 000
 QJ306MA   30   72   19   53   41.5   17 000
 QJ207N2MA   35   72   17   49   41.5   17 000
 QJ307MA   35   80   21   64   51   15 000
 QJ208MA   40   80   18   56   49   15 000
 QJ308MA   40   90   23   78   64   14 000
 QJ209MA   45   85   19   63   56   14 000
 QJ309MA   45   100   25   100   83   12 000
 QJ309 PHAS   45   100   25   100   83   12 000
 QJ210MA   50   90   20   65.5   61   13 000
 QJ310MA   50   110   27   118   100   11 000
 QJ211MA   55   100   21   85   83   11 000
 QJ311MA   55   120   29   137   118   10 000
 QJ212MA   60   110   22   96.5   93   10 000
 QJ212N2MA   60   110   22   96.5   93   10 000
 QJ312MA   60   130   31   156   137   9 000
 QJ312 PHAS   60   130   31   156   137   9 000
 QJ213MA   65   120   23   110   112   9 500
 QJ213N2MA   65   120   23   110   112   9 500
 QJ313MA   65   140   33   176   156   8 500
 QJ214N2MA   70   125   24   120   122   9 000
 QJ314MA   70   150   35   200   180   8 000
 QJ314N2MA   70   150   35   200   180   8 000
 QJ215MA   75   130   25   125   132   8 500
 QJ215N2MA   75   130   25   125   132   8 500
 QJ315N2MA   75   160   37   216   200   7 500

SKF bearing

You can get competitive price of SKF bearing from our company. More information, please contact us  E-mail:sale@adyrbearing.com

ADYR Bearing Co.,Limited. has been engaged in bearing industry for many years, we provide a wide selections of brands including Timken bearing, INA bearing, FAG bearing, NTN bearings, SKF bearings, deep groove ball bearings, cylindrical roller bearings, tapered roller bearings, self-aligning ball bearings,thrust ball bearings, rolling mill bearings, spherical roller thrust bearings, spherical bearings, adapter sleeves, withdrawal sleeves, lock nut, lock washer,locking device, etc.

We can provide bearing and non-standard bearings, linear bearings, automotive bearings, large bearings, railway bearings, spherical plain bearings, high temperature, super-precision bearings, as well as some rare types customized to your need.

Our bearings are exported to countries and regions in Europe (the UK, France, Italy, Germany), North America (USA, Canda),

Middle East and Southeast Asia.Our goal is to exceed our customers’ expectation in providing quality products and continue to improve the services we
provide on a timely manner.Please view the products at our website that we can supply. You can also contact our sales representative to request a
price quotation on the products that you are looking for that may not been shown on our website.

Packaging & Shipping
1.industrial packing+industrial cartons+pallets
2.single brand box+brand cartons+pallets
3.follow customer’s requests
A.Plastic Tubes or Single Boxes ( Usually 10pcs in one plastic tube for steel bearings);
B.Cartons ( No more than 30kg for one carton );
C. Pallet ( Usually more than 400kg totally will use pallet )
D. Delivery time :7-35 days ( by sea or by air )
Generally,We will choose the most suitable packing method for products. If you have any special requirements for packing, pleasecontact us in advance.
 After Sales Service
In order to meet the increasing market demand, and better serve the customers, we has built a professional team composed of sales engineers to provide perfect pre-sales and after-sales services.We provide consulting services for maintenance, procurement and design staff concerning the basic knowledge, selection, installation and removal, lubrication, maintenance and equipment management of imported bearings.All these services are mean to reduce the installation errors, form good work and safety habits and improve the efficiency of maintenance personnel, thus achieving the best use effect and the maximum bearing life.We also help users analyze the failure of the bearing, confirm the causes, provide solutions for this issue and give suggestions on precautionary measures.
FAQ
Q:What’s your after-sales service and warranty?
A: We promise to bear the following responsibilities when defective products were found:
1.12 months warranty from the first day of receiving goods;
2. Replacements would be sent with goods of your next order;
3. Refund for defective products if customers require.
Q:Do you accept ODM&OEM orders?
A: Yes, we provide ODM&OEM services to worldwide customers, we also customize OEM box and packing as your requirements.
Q:What’s the MOQ?
A: MOQ is 10pcs for standardized products; for customized products, MOQ should be negotiated in advance. There is no MOQ for sample orders.
Q:How long is the lead time?
A: The lead time for sample orders is 3-5 days, for bulk orders is 5-15 days.
Q:Do you offer free samples? 
A: Yes we offer free samples to distributors and wholesalers, however customers should bear freight. We DO NOT offer free samples to end users.
Q:How to place order?
A: 1. Email us the model, brand and quantity,shipping way of bearings and we will quote our best price for you;
2. Proforma Invoice made and sent to you as the price agreed by both parts;
3. Deposit Payment after confirming the PI and we arrange production;
4. Balance paid before shipment or after copy of Bill of Loading.
Contact with us now!

 

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